Spark arrestor apparatus



FIG. 1 is a top plan view of the novel spark arrestor apparatus;

FIG. 2 is a side (either) elevational view thereof;

FIG. 3 is a frontal (or rear) elevational view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a perspective view thereof. 

The ornamental design for a spark arrestor apparatus, as shown and described. 